Unless your private lender is so small that they don't mind sharing their bank account information with every realtor/seller you are ever going to work with, not many of us are going to give you our bank statements, and the fact that you have someone else's bank statements would not indicate to me as a seller that you have the capacity to perform to a cash offer contract you are asking me to sign as a seller. 

Also watch out for rules that would impact your tenancy i.e. no rentals with short term leases or leases less than 2 years, or no renting out individual rooms, or no rentals to individuals with different last names.  

Thing is, public record indicates this home was last sold for $38K in 1979!

For more on disqualified individuals, see the following. https://www.irs.gov/retirement-plans/retirement-plan-investments-faqs

I also want to build a great network of like minded individuals who want to help each other profit and prosper together in real estate investing!

There are many determining factors and indicators in this market that will allow you to narrow down a solid price point that is reliable based on market activity - I do it every day for investors, investment companies, and lenders throughout the country that need Metro Atlanta home assessments. 

The reason they do this is because individuals buying a small piece of land with a house on it, or with the intentions of building a house on it, are usually looking for a lower price point home and are not looking to invest by owning the minerals as well.

Question: would the capital gains tax be calculated individually after the profits are disbursed, or do I have to process that prior to disbursement and subtract out the estimated tab amount?

Depending on the manner of the permits, you can usually have a licensed contractor sign an affidavit indicating the work was done satisfactorily, or you can actually call for an inspection.

You can, however, have another unrelated individual with a SDIRA lend to your LLC from their SDIRA.